Asparagus, Mushroom, Leek, And Cheese Galette Recipe

Name: Asparagus, Mushroom, Leek, And Cheese Galette Recipe
Prep time: 10 min
Cook time: 70 min
Total time: 80 min
Yield: 8
Ingredients: 1/2 batch Old-Fashioned Flaky Pie Dough; 1/4 cup plus 1 tablespoon (75ml) extra-virgin olive oil, divided, plus more for drizzling; 1 pound (450g) mixed mushrooms, such as cremini, stemmed and caps sliced 1/4 inch thick; Kosher salt; 1 pound (450g) asparagus, woody ends trimmed, stalks cut on the bias 1/4 inch thick, tips reserved; 1 teaspoon minced fresh thyme leaves; 4 tablespoons (60g) unsalted butter; 1 1/2 pounds leeks, white and light green parts only, halved lengthwise then cut crosswise into 1/4 inch thick half-moons; 2 ounces (55g) grated Fontina cheese; 1 large egg, beaten